Bump dompurify from 3.3.3 to 3.4.1 in /site

Bumps [dompurify](https://github.com/cure53/DOMPurify) from 3.3.3 to 3.4.1.
- [Release notes](https://github.com/cure53/DOMPurify/releases)
- [Commits](cure53/DOMPurify@3.3.3...3.4.1)

---
updated-dependencies:
- dependency-name: dompurify
  dependency-version: 3.4.1
  dependency-type: indirect
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]